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mm: remove redundant check non_swap_entry()

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In zap_pte_range(), the check for non_swap_entry() and
is_device_private_entry() is unnecessary since the latter is sufficient to
determine if the page is a device private page.  Remove the test for
non_swap_entry() to simplify the code and for clarity.

Signed-off-by: Ralph Campbell <rcampbell@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: David Hildenbrand <david@redhat.com>
Link: http://lkml.kernel.org/r/20200615175405.4613-1-rcampbell@nvidia.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ralph Campbell 2020-08-06 23:22:21 -07:00 committed by Linus Torvalds
parent a6f23d14ec
commit 463b7a173d
1 changed files with 1 additions and 1 deletions
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mm/memory.c
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@ -1098,7 +1098,7 @@ static unsigned long zap_pte_range(struct mmu_gather *tlb,
}
entry = pte_to_swp_entry(ptent);
if (non_swap_entry(entry) && is_device_private_entry(entry)) {
if (is_device_private_entry(entry)) {
struct page *page = device_private_entry_to_page(entry);
if (unlikely(details && details->check_mapping)) {